Vacuum And tuning Help

1wild&crazyguy said

....which brings us back to cylinder heads and how they effect the cfm demand/usage/requirement.

small or big motor with relatively small ports will have plenty of velocity/speed to activate the larger carb, and will make more power with it.

I think we know what happens with a large port on either...

Click to expand...

Not true. A given motor with small ports, will not need as big a carb as the same motor with big ports. The small ports will be the restriction, not the carb. But again, what type of motor are we talking about. All out race motor or street motor? Makes a difference. Try putting your dominator on a stock slant six. Might be able to get it to idle, but nothing else. There would not be enough air velocity thru the carb to active the metering circuits.